Bobbin release for weet-replenishing looms



Dec. 28,1926. 1,612,111

A. A. G ORDON BOBBIN RELEASE FOR WEFT REPLENISHING LOOMS Filed August 11, 1924 Patented Dec. 28, 1926 UNETED: stares earner o r-rites...

ALBERT'A. GORDON, OFWOROESTER, MASSAGHUSE'ITS, ASSIGNOR EEO OROMP-TON & Klll'OilV'LES LOOIQ WORKS, OF WORCESTER, II.-ASSAGEUSET-TS,. A CORPORATION OF MASSACHUSETTS.

BOBBIN RELEASE FOR WEET-REPLENISl-IING LOOMSL Application filed August 11, 1924. seriaino. 731,265.

This invention relates toweft replenishing mechanismfor looms and an object of the invention is to provide improved means-for releasing an untransf'erred bobbin left in transfer position by the revocation of the replenishing mechanism due to a misplaced shuttle.

In the usual multi-color weft replenishing mechanism, anexample of which is shown in patent to Ryon No. 1,080,748, a plurality of bobbin compartments are supplied with bobbins of different colors and communicate with a. common guideway which directs the bobbinfrom any one-of the compartments to transfer position. Thebobbin to be trans ferred isselected by a mechanism operatively associated with the box motion or pattern controlling mechanism therefor. When the filling in'an active shuttle becomes substantialy exhausted abobbin. from the corresponding compartment is given a preliminary movement toward transfer position while theshuttle is oirthe -replenishing side of the-loom, and at the next return of the 25 indicating shuttle-to the replenishing sideof thBlOOIIlrthflbObbih is given a second move ment whiclr places it in transfer position. Duetofaulty picking or improper checking ofi'the shuttle. or for a variety of other causes the; shuttle. will not always be properly boxedrwhen. it should. receive afresh bobbin, inlwhich-case mechanism is provided to preventtrans-fer. The shuttle is then picked to the opposite. side of. the, loom. but the bobbin which shouldhave been transferred remains initransfen'positioniandiifanother shuttle becomes-activeit is-necessary to dispose of the untnansfenred? bobbin in. order to prevent a mistnansfer.

prior Patent No. 932,119 accomplishes this result" by means of a bobbin giveway normally in. bobbin retaining position and oscillated every second pick of the loom while the lay is moving rearwardly by the picking; mechanism or some other part having a motion: every alternate pick. This type of: motion was used extensively until it was replacedby a-mechanism of thetype shown in: the Lauzon patent of April 2, 1918. No. 1,261,568. This latter motion actsonly at thetime of transfer and is normally in bobbin releasing ositiomthensettihg of the replenishing mechanism to accomplish transfer resulting" in armovement of the bobbin giveway to bobbin retaining position. The resetting of the replenishing mechanism moves the giveway to bobbin releasing posi? tion, but this returnto normal open. position of the giveway occurs at the-latter part of the forward stroke of the lay and the bobbin is released withthe-lay advancing. This frequently results in. a bobbin bei'ngcaught by the advancing lay andforcedhgaihst. the replenishing mechanism-with resultant damage.

It is the general object of. my present inventionto' provide for releasing an; untransferred bobbin on the rear stroke of. the lay by mechanism controlled by the replenishing mechanism. and preferably operable at each indication of weft exhaustion. My present invention provides a. bobbin giveway normally in bobbin retaining position. and movable to bobbinreleasing position by the mechanism which. indicates substantial ex.- haustion of weft.

A further object of my inventionis to provide a single bobbinreleasi'ng mechanismoperable at indication. of. substantial. weft ex.- haustion in any of a plurality of shuttles.

In the accompanying drawing, wherein one form of' my. invention is. shown,

Fig. 1 is a. side elevation; from. the: interior of: the loom. showing: a multii-color Weft replenishing mechanism having my invention. applied thereto, and. showing, the parts in. normal positioni to retain. the bobbin,

Fig. 2 is a view similar to Fig.1 but showing the parts moved to. bobbin releasing position, and v Fig. 3 is a. vertical. section. taken on. line 3. 3. of Fig. 1 and showing the parts .in' normal position.

In carrying out my invention I provide a weft replenishing mechanism having a stand on which a. rod 11. ismountedfor longitudinal. and angular. movement, said rod-having a grooved: collar 12 to. cooperate with a lever 13-pivoted at 14. and controlled as to position by a box; motion. or pattern mechanism (not shown-)'.. Vertical slides=15 are'guided by bearingslband l7 and have projectingtherefrom upper and. lower lugs 18 and. 19, respectively- Secured to the rod 11 is a slideoperating member 20 having .a pair of fingers. one ofwhich is mdicated at 211 in the drawings, sa1d.fingers.c,o operating with the lugs 18 and 19 to raise and lower slides 15.

Shaft 22 is provided with an arm 23 which operates with dogs 21 one of which is pivotally mounted in the top of each of the slides 15. A second .arm 25 is secured to the shaft 22 and is attached by means of connector 26 to shuttle feeler holder .27 which is pivoted as at 28 to the frame of the magazine. Bolted or otherwise secured in the holder 27 is a shuttle feeler 29 having a shuttle engaging face 30 which is lowered into the path of the shuttle immediately preceding transfer.

The support or giveway for the butt end of the bobbin is indicated at 31 and is pivotally mounted as at 32 to a link 33 pivotally mounted on tie rod 3% forming part of the replenishing mechanism frame, the guideway 31 being provided with an extension 35 which cooperates with the link 36 pivotally connected at 37 to the frame of the magazine. A spring 38 is interposed between an extension on the link 33 and the arm 35. The particular form of giveway described may be as illustrated in patent to Ryon No. 1,366,950.

In the operation of the mechanism thus far described, at indication of weft exhaustion finger 21 is given an upward movement which engages lug 18 on the slide 15 corresponding to the active shuttle and raises said slide. This movement comes only at indication of substantial weft exhaustion, but finger 21 is given a periodic downward movement on every non-detecting beat of the lay and operates to depress lug 19 of a raised slide 15 when moved to registering position therewith under influence of the pattern mechanism. Whenever the shuttle feeler 29 is raised by a misplaced shuttle the shaft 22 will be given a movement to lower the transfer latch (not shown) to prevent transfer. For a more complete description and operation of the mechanism thus far described reference may be had to the said hyon patents.

My invention relates more particularly to the devices for moving the giveway arm or support 31 to bobbin releasing position onthe indicating pick of the loom. 1n carrying out my invention 1 provide a stud carrier having adjustably mounted thereon a stud 51 and pivotally mounted for free movement on stud 28 preferably between the frame 10 of the replenishing mechanism and the hub of the shuttle feeler holder. Connected to the stud carrier 50 as at 52 is the lower end of an adjustable link or connector 53 the upper end of which is pivotally connected as at 5 to arm 55 of a control lever 56. The latter lever is provided with a hearing 57 loosely mounted on rod 11 and has an offset arm 58 through which the rod 11 passes, said bearing 56 and arm 53 lying on opposite sides of the bearing 59 rigid with the frame of the replenishing mechanism and forming a fixed bearing for rod 11. Extending from the arm 58 substantially parallel to rod 11 is a finger 60 which overhangs the adjacent finger 21 of the slide operating member 20. The finger 50 is sufficiently long to be in the path of finger 21 as the latter moves upwardly in any of its longitudinal positions.

In order to limit downward movement of the link 53 there is provided a stop 61 positioned for engagement with arm 55 so as to hold the finger (50 slightly above the finger 21 as the latter moves longitudinally with rod 11. The stud 51 is positioned for engagement with a cam face 62 formed on the link 33.

In the normal operation of the loom the shuttle feeler 29 will be raised and all of the slides 15 will be in lower position, the giveway 31 being in bobbin retaining position. At indication of weft exhaustion the slide 15 corresponding to the indicating shuttle will be raised and finger 21 will lift finger 60 the action of which is to raise conneotor 53, causing stud holder 50 to move about stud 28 as a pivot to move stud 51 against cam face As stud 51 moves over cam face 62, the bobbin support 31 is moved from the bobbin holding position shown in Fig. 1 to the bobbin releasing position shown in Fig. 2. The finger 21 is raised temporarily and as it descends, the finger 60 will also be lowered until the stop 61 engages arm 55. Thus the bobbin give way is moved to releasing position for a short interval only and is returned immediately to bobbin retaining position. It is to be understood that the raising of the finger 21 is due to the indication from the weft detecting mechanism and as such indication is not completed until the lay reaches front center it will be seen that the finger 60 cannot be raised and the bobbin giveway or support 31 cannot be moved to release the bobbin until the lay is on its rearward stroke. The bobbinis therefore released after the shuttle has been moved from under the bobbin so that the latter falls without contacting with any part of the lay. If the replenishing mechanism is revoked and a bobbin remains in transfer position until the next indication of substantial weft exhaustion no harm can result as indication must precede the subsequent transfer and there is no possibility that the untransferred bobbin will remain in the replenishing mechanism long enough to be placed in the wrong shuttle... In a mechanism of the type referred to herein, an indication of weft exhaustion is not necessarily followed by a transfer, but a transfer must always be preceded by an unrevoked indication of exhaustion, hence there is no danger that a bobbin will be transferred into the wrong shuttle.

From the foregoing it will be seen that I have provided a bobbin releasing mechanism operated by the replenishing mechanism on the rearward stroke of the lay so that damage to or by the bobbin is prevented. It will further be seen that the releasing mechanism is effective to release a bobbin remaining untransferred independently of the compartment from which the bobbin originated.

Having thus described my invention itwill be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing mechanism, a member having a movementat the time of indication of weft exhaustion and a bobbin support normally in bobbin retaining position to be operatively connected to said member at the time of indication of weft exhaustion and moved by said member to bobbin releasing position.

2. In a replenishing mechanism for looms, a bobbin support normally in bobbin retaining position, said replenishing mechanism having a part receiving a movement at indication of substantial weft exhaustion, and connections between the part and the support to move the latter to bobbin releasing position at the time said part receives its motion at indication of weft exhaustion.

3. In a loom weft replenishing mechanism receiving a setting preliminary to transfer at the time of indication of weft exhaustion, a bobbin support movable toward and from bobbin supporting position and in bobbin supporting position immediately prior to indication of weft exhaustion, and means to simultaneously give the replenishing mechanism a preliminary setting and the support a bobbin releasing movement at the time of indication of weft exhaustion.

4:. In a weft replenishing mechanism for looms having a plurality of bobbin compartments, a bobbin support normally in bobbin retaining position, a member movable longitudinally to cooperate with one of the compartments at a time, and angularly at substantial indication of Weft exhaustion, and means operated by said member when moving angularly and operative in all longitudinal positions thereof to move the support to bobbin releasing position.

5. In a weft replenishing mechanism for looms, a bobbin support, a member movable angularly in two directions from a neutral position, means positioned to engage said member when the latter moves anguiarly in one direction to move the bobbin Support to bobbin releasing position, and means to pre vent the first named means from engagingthe angularly movable member when the latter moves in the other direction.

In testimony whereof I have hereunto affixed my signature.

ALBERT A. GORDON. 

